The Last Czars is proof that two great tastes sometimes do taste great together. A hybrid of The Crown and a bingeable documentary series, Netflix’s six-part historical saga about the fall of Russia’s Romanov dynasty is a lavish period-piece drama driven by non-fiction talking-head interviews and archival material. It’s a combination that, in theory, should negate the power of both its chosen forms, resulting in cardboard cut-out recreations and cursory factual explanations.